More answers

Yes D is true is because thats what the scale shows us how basic or how acidic your solution is

vera_ewing

2 years ago

Are B and C true?

taramgrant0543664

2 years ago

One is true and one is not true

vera_ewing

2 years ago

B is true

vera_ewing

2 years ago

Right?

taramgrant0543664

2 years ago

B is actual the not true one the entire scale involves powers of 10 so for example your solution has a pH of 1, that solution is 10x more acidic than a solution of pH2 and 100x more acid than a solution of pH3. The concentration of H+ ions is the same way so going back if you solution has a pH of 1 you have 10x the H+ ions than a solution of pH 2 and 100x more than a pH of 3

vera_ewing

2 years ago

So that means A is true, and the answer is C?

taramgrant0543664

2 years ago

A,C and D are all true B is not true because a pH of 4 does not have twice the H+ ions of a solution with a pH of 2. The solution with a pH of 2 would have 100x the H+ ions than the solution of a pH of 4

vera_ewing

2 years ago

Ohhh okay that makes so much more sense! Thank you! :)

taramgrant0543664

2 years ago

No problem! Glad to help!

vera_ewing

2 years ago

How about this one? I think either C or D.

1 Attachment

Something to note about this is that the H+ and the OH- are in aqueous form where the H2O is actually a liquid the H2O would not be present in the expression. If the H2O was not liquid but aqueous then it would be C but since it is a liquid your answer would be B

Sorry nope! How did you come to the conclusion that it is either B or D?

vera_ewing

2 years ago

Well doesn't pH have to be a multiple of 10?

taramgrant0543664

2 years ago

pH is not necessarily a multiple of 10. The only time it is in multiples of 10 is when you are talking about a solution of pH of 1 being 10x more acidic than the pH of 2 solution or the pH1 solution having 10x more H+ ions than that of a solution of pH2
In this case pH=-log(5x10^(-8))= a pH of 7.3